A. (-4, 2)

B. (4, 2)

C. (6, 4)

D. (8, 4)

The centres of the three circles x^{2}+y^{2}-10x+9=0, x^{2}+y^{2}-6x+2y+1=0, x^{2}+y^{2}-9x-4y+2=0 lie on the line

If y=4x-5 is a tangent to the curve y^{2}=px^{3}+q at (2, 3), then

For the circles x^{2}+y^{2}+4x+2y-4=0, x^{2}+y^{2}-4x-2y+4=0 the line 3x+4y-5=0 is a

The locus of midpoints of the chord of the circle x^{2}+y^{2} = 25 which pass through a fixed point (4, 6) is a circle. The radius of that circle is

If one end of the diameter of the circle x^{2}+y^{2}-6x+4y-12=0 is (7, -5), then the other end of the diameter is